private FetClassProperty GetFetClassProperty()
{
try
{
string instanceId = _instanceIdentify.Id.ToString();
string fetclassId = _fetclassIdentify.Id;
Dictionary <string, string> args = new Dictionary <string, string>();
args.Add(HttpCommands.cstArgNameCommand, HttpCommands.cstArgCmdGetFetClassProperty);
args.Add(HttpCommands.cstArgInstanceId, instanceId);
args.Add(HttpCommands.cstArgFetClassId, fetclassId);
string url = HttpCommands.GetCatalogUrlPage(_uri, HttpCommands.cstCatalogPage);
url = HttpCommands.GetCatalogUrl(url, args);
object obj = GetObjectFromHttpStream.GetObject(url);
FetClassProperty pro = obj as FetClassProperty;
if (pro == null)
{
throw new Exception("获取要素类\"" + _name + "\"的属性对象失败。");
}
return(pro);
}
catch (Exception ex)
{
Log.WriterException(ex);
return(null);
}
}
protected override void Init()
{
FetClassProperty pro = GetFetClassProperty();
if (pro != null)
{
_fields = pro.Fields;
_fullEnvelope = pro.FullEnvelope.Clone() as Envelope;
_shapeType = pro.ShapeType;
_spatialRef = pro.SpatialReference;
_coordType = pro.CoordinateType;
_featureCount = pro.FeatureCount;
if (_shapeType == enumShapeType.Point)
{
TryAdjustGridDefinition();
}
_gridStateIndicator = new GridStateIndicator(_fullEnvelope.Clone() as Envelope, _gridDefinition);
_fullGridCount = _gridStateIndicator.Width * _gridStateIndicator.Height;
_isInited = true;
}
}
